Approach-withdrawal behavior of peach-faced lovebirds, Agapornis roseicolis, and its modification by brain lesions.
D000818:Animals; D001362:Avoidance Learning; D001717:Birds; D001921:Brain / Q000502:physiology*; D003220:Conflict, Psychological; D004924:Escape Reaction; D006815:Hunger; D014828:Vocalization, Animal